s-B-A-4-s-B-A-6-s-A-9-What-is-the-number-of-subsets-of-B-with-at-most-2-elements-

Question Number 176836 by Ar Brandon last updated on 27/Sep/22

s (B^{'} - A^{'}) = 4

s (B - A) = 6

s (A) = 9

What is the number of subsets of B with

at most 2 elements ?

Commented by Rasheed.Sindhi last updated on 27/Sep/22

s (B - A) \neq 6

s (A) \neq 9

A s e t w i t h n e l e m e n t s h a s 2^{n} s u b s e t s .

Commented by Ar Brandon last updated on 28/Sep/22

s(x) here is number of elements of x, Sir

Commented by Rasheed.Sindhi last updated on 28/Sep/22

T h a n X t o c l a r i f y s i r, I t h o u g h t i t

n u m b e r o f s u b s e t s .